| Abstract Detail
Phycology Ruiz-Medina, Marcos Adrián [1], Sansón, Marta [1], González-Rodríguez, Águeda María [1]. Morpho-anatomical characteristics of Fucus guiryi (Fucales, Phaeophyceae) from its southern limit of distribution in the Canary Islands. The brown macroalgae in the order Fucales include foundation species on rocky habitats in cold and warm temperate regions. This work has focused on Fucus guiryi, a recently described species segregated from Fucus spiralis based on molecular results. This species inhabits the intertidal zone of the temperate European and African coasts of the North Atlantic, and shows its southernmost limit of distribution in the Canary Islands. Macroscopic as well as anatomical characteristics of all vegetative and reproductive structures are presented. Several differences in habit exist between Fucus guiryi and other species of the genus located further north, such as length and width of stipe and branches, number of dichotomies and number of receptacles. Anatomical features reported here for the first time exhibit subtle differences with close species, such as Fucus vesiculosus and Fucus serratus. The morphology and arrangement of cells in the different strata (medulla, cortex and meristoderm) and the amount of mucilage in interstitial spaces are distinctive characters that also vary according to the age of thallus.
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1 - University of La Laguna, Botany, Ecology and Plant Physiology, Avenida Astrofísico Francisco Sánchez s/n, Entrada Campus Anchieta, 4, San Cristóbal de La Laguna, Santa Cruz de Tenerife, 38200, Spain
Keywords:
alcian blue
anatomy
brown algae
cortex
dichotomy
histological stain
medulla
meristoderm
receptacle.
Presentation Type: Poster
Session: P3, Phycology Posters
Location: Virtual/Virtual
Date: Wednesday, July 21st, 2021
Time: 5:00 PM(EDT)
Number: P3PY003
Abstract ID:242
Candidate for Awards:None |
